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The M×N problem of tool calling and open-source models
Tool calling with closed-source models is seamless. You pass a list of functions to the API, the model calls them, you get structured JSON back.
New
The latest blog posts to take off on Hacker News. 31,667 posts.
1622
Session is shutting down in 90 days
The Session Technology Foundation cannot continue without your support. Donate today to help Session in its fight for survival.
1623
How Passive Radar Works
Passive radar is radar that doesn't need a transmitter; it uses existing broadcasts of opportunity.
1624
The Zettelkasten method in Obsidian
Learn how to set up a working Zettelkasten in Obsidian: note types, vault structure, MOCs, and how AI handles the maintenance that kills most systems.
1625
Help Keep Thunderbird Alive
Thunderbird is a free email application that’s easy to set up and customize - and it’s loaded with great features!
1626
Open source security at Astral
Insights and guidance from our engineering team on how Astral secures its tools.
1627
Expanding Swift's IDE Support
You can now write Swift in a broader range of popular IDEs, including Cursor, VSCodium, AWS’s Kiro, and Google’s Antigravity. By leveraging VS Code extension compatibility, these editors tap directly into the Open VSX Registry, where the official Swift extension is now live.
1628
Claude Managed Agents
Claude Managed Agents is Anthropic's suite of composable APIs for building and deploying cloud-hosted agents at scale. See what's new and how to get started.
1629
Muse Spark: Scaling towards personal superintelligence
Today, we’re excited to introduce Muse Spark, the first in the Muse family of models developed by Meta Superintelligence Labs. Muse Spark is a natively multimodal reasoning model with support for tool-use, visual chain of thought, and multi-agent orchestration.
1630
What is RISC-V and why it matters to Canonical
In this blog I will look at some of the drivers for the growth of RISC-V, its value proposition and explain why supporting RISC-V is important to Canonical. […]
1631
Škoda DuoBell: A bicycle bell that penetrates noise-cancelling headphones
Pedestrians wearing headphones are exposed to an increased risk of accidents. In an effort to reduce collisions with cyclists, Škoda Auto, in collaboration with scientists, introduces an innovative bicycle bell whose sound can penetrate even active noise cancellation systems. In doing so, it helps prevent injuries to…
1632
We moved Railway's frontend off Next.js. Builds went from 10+ mins to under 2
We migrated http://railway.com, the dashboard, and the canvas from Next.js to Vite + TanStack Router in two PRs. Here's why, how, and what we learned.
1633
Assessing Claude Mythos Preview's cybersecurity capabilities
Technical details on how we tested Claude Mythos Preview, a model strikingly capable at computer security tasks, and what we found.
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Project Glasswing: Securing critical software for the AI era
A new initiative to secure the world’s most critical software and give defenders a durable advantage in the coming AI-driven era of cybersecurity.
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Cloudflare targets 2029 for full post-quantum security
Recent advances in quantum hardware and software have accelerated the timeline on which quantum attack might happen. Cloudflare is responding by moving our target for full post-quantum security to 2029.
1637
AI may be making us think and write more alike
Large language models may be standardizing human expression and subtly influencing how we think, says study led by USC Dornsife researcher
1638
We found an undocumented bug in the Apollo 11 guidance computer code
How a specification surfaced a defect in the Apollo flight code.
1639
John Coltrane illustrates the mathematics of jazz
The Jazz of Physics: Albert Einstein and John Coltrane had a lot in common. The so-called “Coltrane circle” or “Circle of Fifths,” but incorporates Coltrane’s own innovations. Coltrane gave the drawing to saxophonist and professor Yusef Lateef in 1967, who included it in the Repository of Scales and
1640
Dear Heroku: Uhh What's Going On?
An open letter urging Heroku to clarify its roadmap, define “sustaining engineering,” and communicate honest business intent to developers.
1641
Anthropic expands partnership with Google and Broadcom for next-gen compute
Anthropic secures multiple gigawatts of next-generation TPU capacity starting in 2027, its largest compute commitment to date.
1642
A macOS bug that causes TCP networking to stop working after 49.7 days
At Photon, we are developing the world’s most complete iMessage API (with RCS and SMS fallback) for agents: infrastructure that lets Agents reliably communicate through one of the most native messaging interfaces people already use. While building it, we run Mac-backed systems continuously and care a lot about making…
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Bacteria found in the human intestine capable of improving muscle strength
The University of Granada participates in research linking a bacterium of the Roseburia genus with improved physical condition. This finding could lead to a probiotic for human consumption that helps maintain strength and fitness during aging. The study has been published in the prestigious scientific journal Gut
1645
LibreOffice – Let's put an end to the speculation
Ideally, we would have preferred to avoid this post. However, the articles and comments published in response to Collabora’s and Michael Meeks’ biased posts compel us to provide this background information on the events that led to the current situation. Unfortunately, we have to start from the very beginning, but…
1646
Union types in C# 15
C# 15 introduces union types — declare a closed set of case types with implicit conversions and exhaustive pattern matching. Try unions in preview today and see the broader exhaustiveness roadmap.
1647
Scientists observe an immune signaling complex forming inside cells
SLAC scientists observed an immune signaling complex forming inside cells for the first time, revealing insights that could guide new treatments.
1648
Emotion concepts and their function in a large language model
All modern language models sometimes act like they have emotions. What’s behind these behaviors? Our interpretability team investigates.
1649
The FAA’s flight restriction for drones is an attempt to criminalize filming ICE
Legal intern Raj Gambhir was the principal author of this post.Update: On April 15, 2026 the FAA rescinded the TFR (FDC 6/4375) and instead issued an advisory (FDC 6/2824), which states: [Drone] operators are advised to avoid flying in proximity to: Department of War (DOW), Department of Energy (...
1650
Why are we still using Markdown?
Burak Güngörs lab where he does some stuff